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Sum of 13 nonzero fourth powers.
2

%I #5 Nov 04 2015 13:46:39

%S 13,28,43,58,73,88,93,103,108,118,123,133,138,148,153,163,168,173,178,

%T 183,188,193,198,203,208,213,218,228,233,243,248,253,258,263,268,273,

%U 278,283,293,298,308,313,323,328,333,338,343,348,358,363,373,378,388

%N Sum of 13 nonzero fourth powers.

%t Union[Total/@Tuples[Range[3]^4,13]] (* _Harvey P. Dale_, Nov 04 2015 *)

%Y Cf. A000583, A003346, A046044.

%K nonn

%O 1,1

%A Arlin Anderson (starship1(AT)gmail.com)